Question

Prove that the bisector of the vertical
angle of an isosceles triangle bisects the
base at right angles.​

Answer 1

Step-by-step explanation:

Let ΔABC be the isoceleus triangle with AB=AC and AD as vertical angle bisectorAB=AC

∠B=∠C∠BAD=∠CAD

So by ASA criteria the triangles are congruent.⟹BD=DC

So the bisector of vertical angel bisects the base